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List:       linux1394-devel
Subject:    Re: Linux-Firewire based IDE Raid System
From:       Wim Coekaerts <wim.coekaerts () oracle ! com>
Date:       2003-05-28 3:15:51
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hum, now I don't know if Manish responded but we basically have this
stuff.. I think we 're about to post the source for it.


On Tue, May 27, 2003 at 10:58:24PM -0400, Dan Maas wrote:
> * James H. Cloos Jr. (cloos@jhcloos.com) wrote:
> > But it is a good idea to ensure that the kernel does not bother to
> > look for partitions on the array.  You may need to modify the code
> > that searches for partitions on disks to ignore the scsi/raid
> > controler.
> 
> I think the easiest way to do it would be to designate a single file
> to serve as the fake SBP-2 device. This way you could use either a
> file inside another filesystem, or a raw block device - whether it be
> a disk, an md array, or whatever. With a block device you could
> operate it in direct mode (O_DIRECT) to skip the kernel cache and
> ensure synchronous operations. Sector alignment won't be a problem
> because the incoming SCSI requests should already be aligned (I
> think).
> 
> This would work both in user-space and the kernel.
> 
> Regards,
> Dan
> 
> 
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